1/* Message-writing for the dynamic linker. Linux version.
2 Copyright (C) 2013-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <sys/uio.h>
20#include <sysdep.h>
21
22/* This is used from only one place: dl-misc.c:_dl_debug_vdprintf.
23 Hence it's in a header with the expectation it will be inlined.
24
25 This is writev, but with a constraint added and others loosened:
26
27 1. Under RTLD_PRIVATE_ERRNO, it must not clobber the private errno
28 when another thread holds the dl_load_lock.
29 2. It is not obliged to detect and report errors at all.
30 3. It's not really obliged to deliver a single atomic write
31 (though it may be preferable). */
32
33static inline void
34_dl_writev (int fd, const struct iovec *iov, size_t niov)
35{
36 INTERNAL_SYSCALL_CALL (writev, fd, iov, niov);
37}
38